Heater-grate



(No Model.) 2 Sheets-Sheet 1.

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HEATER GRATE. No. 367,255. Patented July 26, 1887.

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-. (No Model.) 2 Sheets-Sheet 2.

J. D. VANCE.

HEATER GRATE.

N0. 367,255. Patented July 26, 1887.

N. PEIERS, Phoh-Uihognphur. Wnh nglon. n.0,

A U ITED STATES PATENT OFFICE.

JOHN 11- VANCE, OF CINCINNATI, OHIO.

H EATER-G RATE.

SPECIFICATION forming part of Letters Patent 1 l'o.36'7,255 dated July26, 1887.

Application filed December 28, 1886. Serial No. 222,826. (No model.)

T all whom it may concern:

' bleheating effect is had-first, the direct heat by radiation from thefuel in the fire-basket; second, the indirect heat from a current of airwhich is drawn from the outside of building, passed through certainheating-chambers surrounding the open grate, Where it is highly heatedand discharged-into the room where the fire-place is located, or'in aroom above it, through registers in the fireplace front or in the wallfor the purpose; and it consists of certain. novel constructions anddevices, all of which will be fully explained hereinafter.

In the accompanying drawings,Figure 1 rep resents a fire-place, partlyin elevation and partly in section, containing my improvements; Fig. 2,a vertical transverse section on line as m of Fig.1; Fig. 3, ahorizontal section on line y y of Fig. 1; Fig. 4, aperspective view ofthe cast-iron fire-place back; and Fig. 5, a verticaltransverse sectionof the upper portion, showing the construction of hot-air dampers orregister-valves.

Similar letters of reference indicate similar parts. p

A. is thefire-place front; B, the fuel-basket, hung upon hooks b of theback 0, which is the grate-back proper and contains in a single castingthe recessed back wall, 0, and recessed side walls, 0 0, hoodordeflector c, hooks b b, lateral flanges c", and throat a through whichthe productsof combustion of the fuel in the basket B are conducted totheflue E.

F is a base-plate upon which the back 0 is mounted; and G a top platefitting upon the nozzle of the throat c" of the back.

His a jacket, preferably of galvanized sheetiron, riveted or otherwiseattached to the flanges of plates Feud G andto the lateral flanges c ofthe back 0, the spaces between the jacket H, back 0, and front Aconstituting the air-heating chambers I, into which air from the outsideof building is introduced through the flue or duct J.

space I at the top of the heater, while another damper or valve, M,controls the exit of heated air from the heatingchambers I to the ductN, which leads to the room over the grate.

The dampers L and M are connected by a link, Z, by means of which theyare alternately opened and. closed simultaneously, or the opening of thedamper L is accomplished by the closing of the damper M, and vice versa,or the heated air may be divided at will between the room in which thefire-place is located and the room above, in which the duct N debouches,both dampers being manipulated by the lever O, pivoted to the upper partof the front A. p

Referring to Fig. 5, the full lines show the register in the upper partof the front covered by the damper L and the duct N open,.while bydotted lines the duct N is shown covered by the damper M and theregister-openings in the frontA open.

In all previous constructions of grates with which I am familiar thefire-place back 0 is of several plates bolted or riveted together, and,however tight such joints may be originally,

the slightest warping of the plates when sub jected'to heat permits ofthe passage of the 'products of combustion from the fire-place properinto the heating-chambers I,- and vice versa. When the gases ofcombustion pass into the heating-chambers and are discharged into therooms to be heated, the atmosphere which the occupants breathe ischarged with carbonic-acid gas, and when the heated air passes throughthe defective joints of the back into the fire-place proper thesecondary effect of the heater is lost up the chimney, the heated airand gases of combustion flowing together through the throat c and up theflue E.

By my construction all joints in the back are avoided and a transfer ofthe hot gas of combustion to the heating-chamber I or a loss of heatedair up the chimney is entirely pre- 'vented.

Referring to Fig. 5, is a damper hinged to the top of the throat c andactuated by the lever c, which turns on the pivot c and Q11- gages withthe arm on the lower side of the damper-plate. By means of the toothedrack c at the side of the throat the damper may be opened more or lessin operating the grate, and may be closed entirely in the summer seasonto prevent the blowing of soot and dust down the chimney-flue into theroom.

In the construction of the back G tiles 0 are set in the recesses of theback and side walls, 0 c, to intercept the radiant heat from the fuel inthe basket B, to be secured in posi tion in any convenient manner.

Having described. my invention, what I claim is- 1. In a fire-placeheater of the character de scribed, a grate-back composed of a singlecasting integral with the throat c", for the escape of products ofcombustion, the rear and eral flanges c", for the attachment of thesheet I iron jacket, substantially as described.

2. In a fire-place heater of the character described, a grate-back, 0,cast in a single piece with the recessed back walls, 0, sides 0,1nwardly projecting fuel basket supporting hooks b, hood 0, contractedthroat c", and flangesc, for attaching the sheet-iron jacket H,substantially as described.

In testimony whereoflhave signed my name to the foregoing specificationin the presence of 7 two subscribing witnesses.

JOHN D. VANCE.

\Vitnesses:

Cass. ANDERSON, CHAS. L. SHANNON.

